Subcontractor Scope Verification

The contract defines the boundary between finished work and extra billing. Every teardown remodel report calmodern has logged shows the same thing regarding renovation budget creep. A gap in the scope often leaves a hole in the plumbing or a missing layer of waterproofing during a bathroom remodel.

Define the Wet Area Foundation

The substrate determines the lifespan of the tile. A contract must specify the installation of a cement board or a specialized membrane over the studs. If the scope only mentions the porcelain tile, the cost of the waterproofing system often becomes a change order later. Specify if the installer provides the thinset and the grout or if those materials remain with the general contractor. A failure to name the specific brand of membrane leads to disputes over whether a standard backer board meets the requirement for a wet room. The transition from the floor to the shower pan requires a clear line of responsibility.

Plumbing Fixture Integration

Fixture installation involves more than just tightening a nut. The scope must state whether the subcontractor installs the vanity, the countertop, and the undermount sink. A common gap occurs when the plumber installs the faucet but leaves the installation of the valve or the replacement of a worn cartridge to a different trade. If a vessel sink is being used, the hole pattern in the countertop must be verified before the stone arrives. Specifying the exact type of connection prevents a situation where a plumber arrives but cannot finish because the supply lines do not match the new hardware.

Drainage and Threshold Details

Water movement dictates the success of the floor. The contract must detail the type of drainage system. A curbless entry requires different slope calculations than a standard shower with a raised curb. If the design calls for a linear drain, the installer needs to know if the subfloor prep is included in their labor. The transition between the bathroom floor and the shower base is a frequent source of extra charges. A clear description of the drain assembly prevents the contractor from claiming the installation was more complex than a standard center drain.

Tile and Finish Specifications

The labor for small format pieces differs from large format slabs. A contract that simply says tile work is insufficient. The scope should distinguish between subway tile on the walls and mosaic patterns in the niche. Small pieces require more thinset and more time for layout. If the job calls for a freestanding tub, the plumbing rough-in must be specifically assigned to the plumber to ensure the floor flange is positioned correctly before the heavy stone or acrylic unit is set in place.